Home / 154,028,581.04-212,535,932.53-87,023,090.40

Finding the Fourth Proportional to 154,028,581.04, 212,535,932.53 and 87,023,090.40

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Solution

The fourth proportional to 154,028,581.04, 212,535,932.53 and 87,023,090.40 is: 120,078,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,028,581.04 : 212,535,932.53 = 87,023,090.40 : x
  2. Step 2: Convert to fraction form
    154,028,581.04/212,535,932.53 = 87,023,090.40/x
  3. Step 3: Cross multiply
    154,028,581.04x = 212,535,932.53 × 87,023,090.40
  4. Step 4: Simplify right side
    154,028,581.04x = 18,495,533,669,806,492
  5. Step 5: Solve for x
    x = 18,495,533,669,806,492/154,028,581.04
  6. Step 6: Final answer
    x = 120,078,582.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.