Home / 124,764,328.60-187,158,999.30-42,872,421.40

Finding the Fourth Proportional to 124,764,328.60, 187,158,999.30 and 42,872,421.40

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Solution

The fourth proportional to 124,764,328.60, 187,158,999.30 and 42,872,421.40 is: 64,312,929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,764,328.60 : 187,158,999.30 = 42,872,421.40 : x
  2. Step 2: Convert to fraction form
    124,764,328.60/187,158,999.30 = 42,872,421.40/x
  3. Step 3: Cross multiply
    124,764,328.60x = 187,158,999.30 × 42,872,421.40
  4. Step 4: Simplify right side
    124,764,328.60x = 8,023,959,486,791,905
  5. Step 5: Solve for x
    x = 8,023,959,486,791,905/124,764,328.60
  6. Step 6: Final answer
    x = 64,312,929.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.