Home / 91,130.10-136,689.08-43,779.12

Finding the Fourth Proportional to 91,130.10, 136,689.08 and 43,779.12

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Solution

The fourth proportional to 91,130.10, 136,689.08 and 43,779.12 is: 65,665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,130.10 : 136,689.08 = 43,779.12 : x
  2. Step 2: Convert to fraction form
    91,130.10/136,689.08 = 43,779.12/x
  3. Step 3: Cross multiply
    91,130.10x = 136,689.08 × 43,779.12
  4. Step 4: Simplify right side
    91,130.10x = 5,984,127,417.11
  5. Step 5: Solve for x
    x = 5,984,127,417.11/91,130.10
  6. Step 6: Final answer
    x = 65,665.76

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1.5x scale

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.