Home / 143,779.32-198,430.23-86,437.21

Finding the Fourth Proportional to 143,779.32, 198,430.23 and 86,437.21

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Solution

The fourth proportional to 143,779.32, 198,430.23 and 86,437.21 is: 119,292.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,779.32 : 198,430.23 = 86,437.21 : x
  2. Step 2: Convert to fraction form
    143,779.32/198,430.23 = 86,437.21/x
  3. Step 3: Cross multiply
    143,779.32x = 198,430.23 × 86,437.21
  4. Step 4: Simplify right side
    143,779.32x = 17,151,754,036.52
  5. Step 5: Solve for x
    x = 17,151,754,036.52/143,779.32
  6. Step 6: Final answer
    x = 119,292.22

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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.