Home / 159,756.10-220,457.35-99,312.89

Finding the Fourth Proportional to 159,756.10, 220,457.35 and 99,312.89

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Solution

The fourth proportional to 159,756.10, 220,457.35 and 99,312.89 is: 137,048.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,756.10 : 220,457.35 = 99,312.89 : x
  2. Step 2: Convert to fraction form
    159,756.10/220,457.35 = 99,312.89/x
  3. Step 3: Cross multiply
    159,756.10x = 220,457.35 × 99,312.89
  4. Step 4: Simplify right side
    159,756.10x = 21,894,255,013.46
  5. Step 5: Solve for x
    x = 21,894,255,013.46/159,756.10
  6. Step 6: Final answer
    x = 137,048.01

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1.5x scale

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.