Home / 156,041.40-215,337.15-84,421.38

Finding the Fourth Proportional to 156,041.40, 215,337.15 and 84,421.38

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Solution

The fourth proportional to 156,041.40, 215,337.15 and 84,421.38 is: 116,501.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,041.40 : 215,337.15 = 84,421.38 : x
  2. Step 2: Convert to fraction form
    156,041.40/215,337.15 = 84,421.38/x
  3. Step 3: Cross multiply
    156,041.40x = 215,337.15 × 84,421.38
  4. Step 4: Simplify right side
    156,041.40x = 18,179,059,368.27
  5. Step 5: Solve for x
    x = 18,179,059,368.27/156,041.40
  6. Step 6: Final answer
    x = 116,501.51

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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.